研究设计：系列病例研究。
目的：本研究旨在通过回顾分析一系列创伤性中央脊髓综合征病例，引入一种新的分型系统，该分型系统能够预测患者受损功能恢复的情况。
Objective. The purpose of this study is to review a series of patients with central cord syndrome and to introduce a classification system that is predictive of functional outcome.
研究设计：对II型齿状突骨折老年病例系列进行回顾性研究，对其功能随访采用前瞻性方法。
Study Design. Retrospective case series of elderly patients with Type II odontoid fractures, with prospective functional follow-up.
目的：评估单气囊小肠镜的原型。设计：一个前瞻性的病例系列研究。
OBJECTIVE: to evaluate a prototype of the SBE. DESIGN: a prospective case series.
试验设计：连续收集一系列病例行回顾性研究。
STUDY DESIGN: Retrospective review of consecutive case series.
届时，来自世界各地的研究人员将聚集世博会，共同讨论禽流感、传染病的演变以及中国新发传染病例等一系列话题。
Researchers from all over the world will come together at Expo to discuss issues such as avian flu, the evolution of infectious diseases and emerging infections in China.
届时，来自世界各地的研究人员将聚集世博会，共同讨论禽流感、传染病的演变以及中国新发传染病例等一系列话题。
Researchers from all over the world will come together at Expo to discuss issues such as avian flu, the evolution of infectious diseases and emerging infections in China.
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